12. A man pushes a block up an incline at a constant speed. As the block moves up the incline, (a) its kinetic energy and potential energy both increase. bo (b) its kinetic energy increases and its potential energy remains the same. (c) its potential energy increases and its kinetic energy remains the same. (d) its potential energy increases and its kinetic energy decreases by the same amount. wo

Q: There is a diagonal force of 50 N acting on a box. It’s components, a vertical force of 30 N, and a…

A: Since there is no displacement along vertical axis, the work done by vertical component of the force…

Q: 2) Suppose 65 passengers with an average mass of 75kg are transported by a ski lift to a height of…

A:

Q: When an object slides down a ramp with friction, the kinetic energy at the bottom of the ramp is not…

A: When the object slides down a ramp, force of friction opposes its motion. Hence, work done by…

Q: A massless spring hangs from the ceiling. How much does its potential energy increase, if a 28.8-kg…

A: Equate the weight and the force acting on the spring.

Q: A 3.89-kg rock is released from rest at a height of 26.6 m. Ignore air resistance and determine (a)…

A:

Q: A 56.0-kg runner has a speed of 4.10 m/s at one instant during a long-distance event. (a) What is…

A: Mass of runner m = 56 Kg Speed of runner v = 4.10 m/s a) KE of runner = ?  b) KEf/KEi = ?

Q: A slingshot will shoot a 10.0-g pebble 22.0 m straight up. (a) How much potential energy is stored…

A: